BRITISH ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE,
BIRMINGHAM, 1839
Phil. Inst.1
9 Aug. 1839
Sir,
In reply to your letter of the 27 ult:2 in reference to glass coverings for your photogenic drawings I beg to state that I will provide a sufficient number of cases for as many drawings as you may be kind enough to bring:– each case will be about 3ft: high & 2ft 6 in: wide: so that 6 of them would be equal to the superficial measurement required by 100 drawings.3
I am, Sir, Yours truly
James T. Chance
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